192mg/kg in rats. Less immediately available information for humans.
79 cups
ld50 for lamotrigine
thipental
The radiation LD50 of most insects is far higher than the LD50 of mammals.
LD50 (short for lethal dose 50) is the dose of a substance at which it kills 50% of test subjects.
that's not true, in fact magnesium sulfate has been tested on rats and dogs, and it does have an ld50. "The LD50 values were 206 mg/kg for males and 174 mg/kg for females"
It would take a lot of coffee for a 200 pound person to reach LD 50. The more the weight the more it takes.
The ld50 for humans varies depending on sensitivity of the person- between 150 and 200 mg per kilogram of weight. Using the lower value, that would be over 68 of the 12 oz cups in a very short period of time. Unlikely to happen, as ingestion of 6.3 GALLONS of coffee in a short time frame (half hours) is almost impossible.
1mg/kg
30000000 ng
A probable value for plutonium is LD50 = 5 μg/kg (cumulated chemical and radiological effects).
true,however LD50 just provide coarse idea and specific adverse effect also need be considered.